Ostromer was formerly part of the German Empire. In the German Empire, the place was called Ostromer.
The place is now called Ostromer and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wostromer | Austro-Hungary | Königgrätz | before the Treaty of Saint-Germain |
| Ostromer | Austro-Hungary | Königgrätz | before the Treaty of Saint-Germain |
| Ostromer | Czechoslovakia | Nová Paka | after the Treaty of Saint-Germain |
| Wostromiersch | German Empire | Horschitz | 1939 |
| Ostromer | German Empire | Horschitz | 1939 |
| Ostromer | Czechoslovakia | Nová Paka | 1945 |
| Ostromer | Czechoslovakia | Východní Čechy | 1992 |